From my other post the lastupdate field contains only -- and not the proper date and time. The root of the problem is that I don not have a wind speed device. The function in chart.js that updates #lastupdate throws an error due to there being no windspeed.
Uncaught TypeError: Cannot read property 'toFixed' of null at Object.success (charts.js:263) at c (jquery.min.js:2) at Object.fireWith [as resolveWith] (jquery.min.js:2) at l (jquery.min.js:2) at XMLHttpRequest.<anonymous> (jquery.min.js:2) (anonymous) @ charts.js:263 c @ jquery.min.js:2 fireWith @ jquery.min.js:2 l @ jquery.min.js:2 (anonymous) @ jquery.min.js:2 load (async) send @ jquery.min.js:2 ajax @ jquery.min.js:2 k.<computed> @ jquery.min.js:2 updateSeries @ charts.js:240 init @ charts.js:232 onload @ weatherradio.html:19
windSpeed.updateSeries([{name: "Wind Speed", data: [currentWindSpeed]}]);